<div class="chunk-title">Sec. 20-108. - Standards for coastal A zones (zone CAZ) LiMWA (maximum 650 CRS points).</div>
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               Structures in CAZs shall be designed and constructed to meet V zone requirements,
               including requirements for breakaway walls. However, the NFIP regulations also require
               flood openings in walls surrounding enclosures below elevated buildings in CAZs (see
               Technical Bulletin 1, Openings in Foundation Walls and Walls of Enclosures). Breakaway
               walls used in CAZs must have flood openings that allow for the automatic entry and
               exit of floodwaters to minimize damage caused by hydrostatic loads. Openings also
               function during smaller storms or if anticipated wave loading does not occur with
               the base flood.
               
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                  (1)
                  
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                  All new construction and substantial improvements shall be elevated so that the bottom
                  of the lowest horizontal structural member of the lowest floor (excluding pilings
                  or columns) is no lower than the regulatory flood protection elevation. Floodproofing
                  shall not be utilized on any structures in coastal A zones to satisfy the regulatory
                  flood protection elevation requirements.
                  
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                  (2)
                  
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                  All new construction and substantial improvements shall have the space below the bottom
                  of the lowest horizontal structural member of the lowest floor either be free of obstruction
                  or constructed with breakaway walls, open wood latticework or insect screening, provided
                  they are not part of the structural support of the building and are designed so as
                  to breakaway, under abnormally high tides or wave action without causing damage to
                  the elevated portion of the building or supporting foundation system or otherwise
                  jeopardizing the structural integrity of the building. The following design specifications
                  shall be met:
                  
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                  a.
                  
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                  Material shall consist of open wood or plastic lattice having at least 40 percent
                  of its area open; or
                  
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                  b.
                  
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                  Insect screening; or
                  
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                  c.
                  
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                  Breakaway walls shall meet the following design specifications:
                  
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                  1.
                  
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                  Breakaway walls shall have flood openings to automatically equalize hydrostatic flood
                  forces on walls by allowing for the entry and exit of floodwaters. To meet this requirement,
                  the openings must either be certified by a professional engineer or architect or meet
                  or exceed the design criteria in article V,<a href="" data-chunk-id="PTIICOOR_CH20FLDAPR_ARTVPRFLHARE_S20-102SPST" class="section-link" data-product-id="14661"> section 20-102</a>(4)d.; and
                  
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                  2.
                  
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                  Design safe loading resistance shall be not less than ten nor more than 20 pounds
                  per square foot; or
                  
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                  3.
                  
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                  Breakaway walls that exceed a design safe loading resistance of 20 pounds per square
                  foot (either by design or when so required by state or local codes) shall be certified
                  by a registered professional engineer or architect that the breakaway wall will collapse
                  from a water load less than that which would occur during the base flood event, and
                  the elevated portion of the building and supporting foundation system shall not be
                  subject to collapse, displacement, or other structural damage due to the effects of
                  wind and water loads acting simultaneously on all building components (structural
                  and non-structural). The water loading values used shall be those associated with
                  the base flood. The wind loading values used shall be those required by the North
                  Carolina State Building Code.
                  
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                  (3)
                  
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                  Concrete pads, including patios, decks, parking pads, walkways, driveways, etc. must
                  meet the provisions of article V,<a href="" data-chunk-id="PTIICOOR_CH20FLDAPR_ARTVPRFLHARE_S20-107COHIHAARZOVE" class="section-link" data-product-id="14661"> section 20-107</a>(5).
                  
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                  (4)
                  
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                  All new construction and substantial improvements shall meet the provisions of article
                  V,<a href="" data-chunk-id="PTIICOOR_CH20FLDAPR_ARTVPRFLHARE_S20-107COHIHAARZOVE" class="section-link" data-product-id="14661"> section 20-107</a>(3).
                  
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                  (5)
                  
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                  A registered professional engineer or architect shall certify that the design, specifications
                  and plans for construction are in compliance with the provisions of article IV,<a href="" data-chunk-id="PTIICOOR_CH20FLDAPR_ARTIVAD_S20-76FLDEAPPECERE" class="section-link" data-product-id="14661"> section 20-76</a> and article V,<a href="" data-chunk-id="PTIICOOR_CH20FLDAPR_ARTVPRFLHARE_S20-107COHIHAARZOVE" class="section-link" data-product-id="14661"> section 20-107</a>(3) and (4), on the current version of the North Carolina V zone certification form
                  or a locally developed V zone certification form.
                  
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                  (6)
                  
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                  Recreational vehicles may be permitted in coastal A zones provided that they meet
                  the recreational vehicle criteria of article V,<a href="" data-chunk-id="PTIICOOR_CH20FLDAPR_ARTVPRFLHARE_S20-102SPST" class="section-link" data-product-id="14661"> section 20-102</a>(6)a.
                  
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                  (7)
                  
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                  Fill/grading must meet the provisions of article V,<a href="" data-chunk-id="PTIICOOR_CH20FLDAPR_ARTVPRFLHARE_S20-107COHIHAARZOVE" class="section-link" data-product-id="14661"> section 20-107</a>(11).
                  
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                  (8)
                  
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                  Decks and patios must meet the provisions of article V,<a href="" data-chunk-id="PTIICOOR_CH20FLDAPR_ARTVPRFLHARE_S20-107COHIHAARZOVE" class="section-link" data-product-id="14661"> section 20-107</a>(15) and (16).
                  
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                  (9)
                  
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                  In coastal high hazard areas, development activities other than buildings and structures
                  must meet the provisions of article V,<a href="" data-chunk-id="PTIICOOR_CH20FLDAPR_ARTVPRFLHARE_S20-107COHIHAARZOVE" class="section-link" data-product-id="14661"> section 20-107</a>(17).
                  
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            <p class="historynote0">
               (Ord. of
               <a class="ordinance-link" href="" data-product-id="14661" data-ordinance-id="1056458">
                  6-1-2020(5)
                  </a>
               , art. 5, Â§ H)
               
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